The Walking Dead returns on October 13, 2013, the zombies are smarter, better organized. A catastrophic event takes place within the prison and an errie message on the radio syaing "Those who arrive survive."
All that an more in the 4:27 minutes video preview of season 4, shown at the Comic-Con.
Via the press release:
“ ,” the most watched drama in basic cable history, returns for another terrifying and exhilarating season on Sunday, October 13th at 9pm ET/PT. In this post-apocalyptic world, Rick Grimes (Andrew Lincoln) and his band of survivors continue their ongoing struggle to survive the threat of walkers as well as the dangers that lurk among the living. A 16 episode season of the series which the The New York Post gave 4 stars, will air in two-parts with the first eight hours kicking off October 13th and returning February 2014 with the final eight episodes. Internationally, “ ’ will return to audiences in 120+ FOX International Channels (FIC) markets the week of October 13th, as part of FIC continued commitment to broadcast the series near date-and-date globally. Following “ ” will be the season premiere of AMC’s live after show, “Talking Dead,” hosted by Chris Hardwick at 10pm ET/PT. AMC's “The ” is the first original cable series ever to end the broadcast TV season as the number one show in delivery for adults 18-49.